Pinion-puller.



G. E. AUSTIN & F. LACHANCE.

PINION FULLER.

APPLICATION FILED AUG-I5. 1914.

1,150,729. Patented Aug. 17,1915.

2 SHEETSSHEET lghqanto'zd Gauge E J/usfm. w

COLUMBIA PLANOGRAPH co., WASHINGTON, n c.

G. E. AUSTIN & F. LACHANCE.

PINION PULLER.

APPLICATION FILED AUG-I5, 1914.

1,150,729. Patented Aug. 17, 1915.

2 SHEETSSHEET 2.

36513 G/ttoz ur/ l v/mm COLUMBIA PLANOCIRAPII Co WASHINGTON. D. c.

nnrrnn sraa ns manna" curios.

GEUR'GE acsm ng r'aawsite 1ammabsmcxmemrms,:QF BROOKLYN, NEW Team-shin *n'ncHmicE *ASSIGNUR To sari) AUSTIN.

PINIo'N-PULLER.

Specification of Letters'Patent.

Patented Aug. 17, 1915.

' aptiiatibn fiid august 15, 1914. Serial No. 356,962.

"Be it known that "we, GEO GE E. "Assam and FREDERICK LACHANCE, c'iti'zens'of the United States, residing,frespectively, at New Yo'rk'and Brooklyn; in the counties ofNew York and Kings, respectively, and- State of NewfYor-k, have invented cei'tain new and useful Improvements in Pinion-Pullers; and we do hereby j'declare the following to be a full, clear, and eXact descriptionpf the invention, such as "will enable others skilled in the art f to which it appertains to make an dnsctli'es'a'ine. I

This invention relates" to repairingapp'ar'atus and has for anobjectto provide a means for removing the pinions" from motor -shafts orthe like. t

Afurther obj ect' of this invention is aprovisiono f means for positively engaging a pinion or the like and means for engaging the 'end of the support 'for said pinion or the like,'one of said means having'movement'with re'specttothe other. j

A further object of'thi'sinvention'isthe provision'of :means for gripping a pinion or the likewhich' has been placed in proximity to a housing or bearing.

A furtherpbject'of this invention is a provision of means for transmittin' a 'great pressure against the "supporting medium for a pinion or the like whichpinion or the like is ,held by a portion of this apparatus.

A further obje ctof this *invention is a provision of means for producing the desired adjustment of the apparatus.

Further objects will be apparent from the following specification appended claims and drawings, in which,

Figure 1 is a side elevation of a device constructed in accordance with this invention, Fig. 2 is a plan view thereof, Fig. 3 is a horizontal sectional view, Fig. 4 is an elevation of the pinion gripping means, and Fig. 5 is a vertical sectional view through an apparatus constructed in accordance with this invention.

In repairing motors or the like, it is frequently desired to remove the pinions from the shafting and as the pinions are bound so securely to the shafts it is necessary that great strain be exerted in starting the movement of the pinion on the shaft. Also, in the compact design of some motors, it is difficult to get a gripping means about a pinion as the housing for the motor or bearingis'disposed so close 'tothe end of'the p m n- 'I'n'this invention'there'is a base 10 from which'ri'ses a standard 11 which is provided with the usual'flanges 12 and this standard 1s"slotted"asat'l3 to receive a pin 14 for clampingthe head 15 to said standard. The base is also provided with the threaded socket 16in which'is disposed the threaded end of the stem and this stem has a handwheel 18 *secured thereto. The'head 15 is providecl'with a socket 19 to receive the upperjend of' the stem 17.

The head 15 is provided with a central bore'20 in which operates a ram 21 which is threadedlthrough a portion of itslength as at 22for' engagement in a block 23. A handwheel2 1'is secured to the end oftheram as shown.

The head '15 is'provided with cars 25 in whichare secured 'trunnions 26 and upon thesetrunnionsaremounted the sleeves 27 which have the periphery thereof formed in cams to receive the ends of'links 28 which links are connected at theiropposite'ends with trunnions 2.9 carried by the block23. The sleeves 27 are further provided with flanges 30 from which extend cars 31 to which the curved ends of a handle 32 aresecured. It is obviousthat as the handle 32 is swung the sleeves '27 are rotated about the trunnions 26 and the relative distance be tweenthe block 23 andtrunnions 26 is varied. The bearing surfaces between the trunnions 26, sleeve 27 and links 28 are provided with roller bearings or any other antifriction means.

The forward end of the head 15 is provided with laterally extending ears 33 between which are pivoted the parallel shank members 34 which carry jaw members 35, at the ends thereof. The ears 33 are slotted as at 36 to permit adjustment of the shanks 3 1 and to assist in returning the shanks to spaced position, coiled springs 37 in compression are placed between the shanks and the head 15 as shown.

The jaw members 35 have a sliding movement in the frame 38 to produce stability of said jaw members when they are brought in engagement with the pinion and to permit said jaw members to engage the end of a pinion in limited quarters, the jaw members are recessed as at 39 to present a gripping edge 40 near the outer edge of said jaw members. To move the adjustable jaw mem; bers into engagement with a pinion when said pinion has been passed between the jaw members a screw ll passes through one of the end members of the frame 38 and engages the outside of the movable jaw member so that by continued rotation of said screw as by the hand-wheel 42, the desired binding action is produced. To assist in holding the shank members 34 parallel when the jaw members have been clamped securely against the pinion, screws 43 are provided which screws pass through the inner ends of the shank members and engage the side walls of the head 15.

The operation of this device may be summarized as follows: A shaft or the like supporting a pinion to be removed is positioned between the jaws 35 and the jaws 35 are brought into engagement with the end of the pinion so as to exert a binding action on said pinion in its removal. This binding action is produced by the manipulation of the screws l1 and 43. Then the handle 32 is raised to increase the distance between the trunnions 26 and block 23 when the screw 22 is rotated to force the ram 21 against the shaft which supports the pinion. Then the handle 32 is swung so that the cams of the sleeves 27 decrease the distance between the trunnions and block 23 and thereby force a movement of the pinion with respect to the shaft which supports it.

Modification may be made within the scope of the claims and the drawings submitted herewith are for illustrative purposes only.

Having thus described our invention, we claim:

1. In a device of the class described in combination with a ram, a supporting sleeve for said ram, jaw members having a gripping edge disposedadjacent the outer faces thereof, a frame for said jaw members to lock said jaws in adjusted position, parallel shanks supporting said aw members, said shanks being adj ustably carried by said supporting sleeve, means for normally returning said parallel shanks to spaced relation, and further means for locking said parallel shanks against movement.

2. In a pinion pulling device of the class described, a base, a head movably carried thereby, a ram slidably carried in said head, slotted ears formed on said head, shanks slidably mounted in said ears, said shanks having parallel movement with respect to the axis of said ram, jaws formed on said shanks, a frame carried by said jaws to maintain the relative positions of said jaws and means carried by said frame for binding said jaws against the pinion.

3. In a pinion pulling device of the class described, a base, ahead adjustably carried thereby, a ram slidable in said head, ears formed on said head, shanks slidable between said ears, said shanks having parallel movement with respect to the axis of said ram, jaws carried by said shanks, a frame carried by said jaws, a screw carried by said frame for binding said jaws against an article, screws carried by said shanks, to maintain parallel relation of said shanks and means to normally return said shanks and jaws to spaced relation.

In testimony whereof we aflix our signatures in presence of two witnesses.

GEO. E. AUSTIN. FREDERICK LAOHANCE. Witnesses:

ELIZABETH G. CHRISSTOFFELS, HUGO MOGK.

Gopies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). 0." 

